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Home >> Hyundai >> 2023 >> Santa Fe Plug-In Hybrid Limited >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transaxle Control System (PHEV) >> Transaxle Oil Temperature Sensor >> Repair Procedures >> Removal
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Repair Procedures: Removal

WARNING:
  • Be sure to read and follow the "GENERAL SAFETY INFORMATION & CAUTION " before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
  • Be sure to read and follow the "HIGH VOLTAGE SHUT-OFF PROCEDURES " before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
CAUTION:
  • When the solenoid valve Diagnostic Trouble Codes (DTC) is on, perform the following procedure to replace it.
  • Automatic transaxle is composed of delicate components. Be careful not to cause any damage on the component in the course of assembly and disassembly.
  • Maintain clean condition so that foreign substance does not get into the automatic transaxle.
  • Use a coated apron, latex gloves, and stainless tray to prevent foreign substance from getting into the transaxle.
  • Automatic transaxle fluid (ATF) can be reused. Collect it using a clean 10-liter beaker.
  • Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.

    (Refer to General Information - "LIFT AND SUPPORT POINTS ")

  1. Shut off the high voltage circuit.

    (Refer to General Information - " HIGH VOLTAGE SHUT-OFF PROCEDURES ")

  2. Remove the under cover.

    (Refer to Engine Mechanical System - "ENGINE ROOM UNDER COVER ")

  3. Drain the engine coolant.

    (Refer to Engine Mechanical System - "COOLANT ")

  4. Drain the coolant of hybrid motor cooling system.

    (Refer to Hybrid Motor System - "COOLANT ")

  5. Remove the Hybrid Power Control Unit (HPCU) assembly and tray.

    (Refer to Hybrid control system - "REPAIR PROCEDURES ")

  6. Separate the air bleeder hose (A).
    G16146936Courtesy of HYUNDAI MOTOR AMERICA
  7. Remove the drain plug (A) and reinstall the drain plug after draining ATF totally.

    Drain plug tightening torque: 

    34.3 - 43.1 N.m (3.5 - 4.4 kgf.m, 25.3 - 31.8 lb-ft)

    G16146937Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Replace the gasket (A) before reinstalling the drain plug.
      G16146938Courtesy of HYUNDAI MOTOR AMERICA
  8. Loosen the bolts and then removing the feed tube (A).
    G16146939Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Replace the gasket (A) before reinstalling the bolts.
      G16146940Courtesy of HYUNDAI MOTOR AMERICA
  9. Loosen the mounting bolts of the valve body cover (A).

    Tightening torque: 

    12.7 - 13.7 N.m (1.3 - 1.4 kgf.m, 9.4 - 10.1 lb-ft)

    G16146941Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Be careful when removing the valve body cover because the remaining ATF remains in the valve body cover.
    CAUTION:
    • Replace the gasket (A) before reinstalling the valve body cover.
      G16146942Courtesy of HYUNDAI MOTOR AMERICA
    • After the installation, start the engine and then check if there are any leakages from the valve body cover.
  10. Loosen the bolts and then removing the main harness (A).

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

    G16146943Courtesy of HYUNDAI MOTOR AMERICA
  11. Remove the solenoid valve support bracket (A) after loosening the bolts.

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

    G16146944Courtesy of HYUNDAI MOTOR AMERICA
  12. Disconnect the connector (A) from the solenoid valve connector module.
    G16146945Courtesy of HYUNDAI MOTOR AMERICA
  13. Loosen the solenoid valve connector module mounting bolts (A).

    Tightening torque: 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

    G16146946Courtesy of HYUNDAI MOTOR AMERICA
  14. Disconnect the solenoid valve connector (A).
    G16146947Courtesy of HYUNDAI MOTOR AMERICA
  15. Loosen the bolt and then removing the solenoid valve connector fixing clip (A).
  16. Put down the solenoid valve connector and then separate the solenoid valve connector (B) from the transaxle.
    G16146948Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Replace the O-Ring (A) before reinstalling solenoid valve connector.
      G16146949Courtesy of HYUNDAI MOTOR AMERICA